#183 renamed some files and added Sb_stadtbildserieToStringConverter
#183 added functionality to the Sb_StadtbildWindowSearch
#183 added the Sb_StadtbildserieCreateSearchGeometryListener for later useage
#183 added the logic to choose an location outside of Wuppertal in Sb_StadtbildWindowSearch
#183 set the image numbers for the server search in Sb_StadtbildWindowSearch
#183 if a Suchwort is removed in Sb_StadtbildWindowSearch, the view index had to be converted to the model index
#183 added an check that the image numbers are 6 digit integers
#183 made an own subclass of SearchControlPanel in Sb_StadtbildWindowSearch and override its checkIfSearchShouldBeStarted()
#183 changed the name and the icon of the Sb_StadtbildWindowSearch
Merge branch 'feature/183-stadtbildserie-search' into dev